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Corrected declaration and some syntax errors in GetFrustum

This commit is contained in:
Paolo Cignoni 2005-02-22 10:57:58 +00:00
parent b1469351ad
commit b01f11a93e
1 changed files with 50 additions and 36 deletions
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86
vcg/math/camera.h
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@ -23,6 +23,9 @@
/**************************************************************************** /****************************************************************************
History History
$Log: not supported by cvs2svn $ $Log: not supported by cvs2svn $
Revision 1.18 2005/02/21 18:11:07 ganovelli
GetFrustum moved from gl/camera to math/camera.h
Revision 1.17 2005/02/15 14:55:52 tommyfranken Revision 1.17 2005/02/15 14:55:52 tommyfranken
added principal point added principal point
@ -139,7 +142,7 @@ public:
inline void SetFrustum(S dx, S sx, S bt, S tp, S nearend, S farend,vcg::Point2<S> viewport=vcg::Point2<S>(500,-1)); inline void SetFrustum(S dx, S sx, S bt, S tp, S nearend, S farend,vcg::Point2<S> viewport=vcg::Point2<S>(500,-1));
/// get the camera frustum view /// get the camera frustum view
inline void GetFrustum(const CameraType & camera,S & sx,S & dx,S & bt,S & tp, S & f ,S & fr); inline void GetFrustum(S & sx,S & dx,S & bt,S & tp, S & f ,S & fr);
/// project a point from space 3d (in the reference system of the camera) to the camera's plane /// project a point from space 3d (in the reference system of the camera) to the camera's plane
/// the result is in absolute coordinates /// the result is in absolute coordinates
@ -188,7 +191,12 @@ vcg::Point2<S> Camera<S>::LocalTo_neg1_1(const vcg::Point2<S> & p){
/// set the camera specifying the perspective view /// set the camera specifying the perspective view
template<class S> template<class S>
void Camera<S>::SetPerspective(S angle, S ratio, S near_thr, S far_thr, vcg::Point2<S> vp){ void Camera<S>::SetPerspective( S angle,
S ratio,
S near_thr,
S far_thr,
vcg::Point2<S> vp)
{
S halfsize[2]; S halfsize[2];
halfsize[1] = tan(math::ToRad(angle/2)) * near_thr; halfsize[1] = tan(math::ToRad(angle/2)) * near_thr;
halfsize[0] = halfsize[1]*ratio; halfsize[0] = halfsize[1]*ratio;
@ -197,47 +205,53 @@ template<class S>
/// set the camera specifying the frustum view /// set the camera specifying the frustum view
template<class S> template<class S>
void Camera<S>::SetFrustum(S sx, S dx, S bt, S tp, S near_thr, S far_thr,vcg::Point2<S> vp){ void Camera<S>::SetFrustum( S sx,
S vpt[2]; S dx,
vpt[0] = dx-sx; S bt,
vpt[1] = tp-bt; S tp,
S near_thr,
S far_thr,
vcg::Point2<S> vp )
{
S vpt[2];
vpt[0] = dx-sx;
vpt[1] = tp-bt;
viewport[0] = vp[0]; viewport[0] = vp[0];
if(vp[1] != -1) if(vp[1] != -1)
viewport[1] = vp[1];// the user specified the viewport viewport[1] = vp[1];// the user specified the viewport
else else
viewport[1] = viewport[0];// default viewport viewport[1] = viewport[0];// default viewport
s[0] = vpt[0]/(S) viewport[0]; s[0] = vpt[0]/(S) viewport[0];
s[1] = vpt[1]/(S) viewport[1]; s[1] = vpt[1]/(S) viewport[1];
c[0] = -sx/vpt[0] * viewport[0]; c[0] = -sx/vpt[0] * viewport[0];
c[1] = -bt/vpt[1] * viewport[1]; c[1] = -bt/vpt[1] * viewport[1];
f =near_thr; f =near_thr;
farend = far_thr; farend = far_thr;
}
template<class S>
void Camera<S>:: GetFrustum(
typename S & sx,
typename S & dx,
typename S & bt,
typename S & tp,
typename S & f ,
typename S & fr
){
dx = c.X()*s.X(); //scaled center
sx = -( viewport.X() - c.X() ) * s.X();
bt = -c.Y()*s.Y();
tp = ( viewport.Y() - c.Y() ) * s.Y();
f = f;
fr = farend;
} }
template<class S>
void Camera<S>:: GetFrustum( S & sx,
S & dx,
S & bt,
S & tp,
S & nr ,
S & fr )
{
dx = c.X()*s.X(); //scaled center
sx = -( viewport.X() - c.X() ) * s.X();
bt = -c.Y()*s.Y();
tp = ( viewport.Y() - c.Y() ) * s.Y();
nr = f;
fr = farend;
} }
};
#endif #endif